Adherence to Weight Control Techniques and Weight Loss: A Case Study

Transcription

1 Marquette University Education Faculty Research and Publications Education, College of Adherence to Weight Control Techniques and Weight Loss: A Case Study Anthony F. Rotatori Tom Erekson Robert A. Fox Marquette University, robert.fox@marquette.edu Jaime Costellano Published version. Journal of Obesity and Weight Regulation, Vol. 3, No. 2 (Summer 1984): Permalink. Human Sciences Press (Springer) Used with permission.

2 Journal of Obesity and Weight Regulation Va!. 3, No.2, Summer 1984 Adherence to Weight Control Techniques and Weight Loss: A Case Study ANTHONY F. ROTATORI, Ph.D., TOM EREKSON, Ed.D., ROBERT FOX, Ph.D., and JAIME COSTELLANO, M.A. ABSTRACT: A multiple baseline design across four behaviors was used to assess the effectiveness of a self-monitoring behavioral weight reduction program. The four behaviors were (1) the number of arm lifts used to direct food and liquid, other than water, into the mouth, (2) the number of minutes the subject engaged in daily exercise, (3a) the number of meals eaten per day, and (3b) the number of balanced meals eaten per day. The subject involved in this study was a 22-year-old male graduate student who was approximately 25 pounds overweight. At the completion of the study the subject lost a total of 19 pounds, at a rate of 1.73 pounds per week, over an elevenweek period. The results indicated that a self-monitoring behavioral weight reduction program was effective in reducing the weight in a 22-year-old male graduate student. A follow-up check six months later revealed an additional nine-pound weight loss. The study emphasized the need for reliability checkers in the natural environment to increase the dieter's adherence to weight control techniques. Traditional approaches of effecting lasting weight loss in overweight people have generally achieved minimal success (Abramson, 1977). Although a large number of medical treatments have been tried, ranging from psychotherapy (Burch, 1957) to (Penick, 1970) to fasting (Drenick, 1969) to a wide assortment of varied drugs, the long-term results of such programs have, few exceptions, ranged from disappointing to dismal (Feinstein, 1960). Since it is universally accepted even by such proponents of exercise as Mayer (1968) that the reduction of caloric value of food eaten is both necessary and sufficient for weight loss to occur, it would appear that the control of obesity could be most effectively dealt with in terms of the control of eating behavior. In recent years psychologists have finally become interested in the question of obesity and weight control, and a number of studies utilizing behavior modification techniques to control overeating have been undertaken. Several Dr. Rotatori is with the University of New Orleans. Dr. Erekson and Mr. Costellano are with Northern Illinois University. and Dr. Fox is with Marquette University. Address reprints to: Anthony F. Rotatori, Ph.D., Associate Professor, University of New Orleans, Department of Special Education, New Orleans, LA Human Sciences Press

3 108 The Journal of Obesity and Weight Regulation of these studies have involved aversive counterconditioning of smell, taste, and thought of food, either using electric shock (Meyer & Crisp, 1964), nauseous odors (Foreyt & Kennedy, 1971), or cognitively produced nausea (Cauleta, 1966) as aversive stimuli. Although the reports of these studies have been encouraging. possibly due to the very small number of subjects involved, the fact that all but Cautela's technique involved the use of equipment in a laboratory limits their practical value. A second type of behavior modification approach to weight reduction and the approach used in this study has been that of contingency management. generally involving self-monitoring and self-control procedures (Ferster, Nurnberger. & Levitt, 1962; Stuart, 1967; Harris, 1969). Because such programs have actually taught the subject how to use behavior modification techniques such as positive reinforcement for refraining from eating and stimuli control procedures. such an approach might be expected to have more lasting success than procedures that do not focus on producing permanent changes in the overweight person's knowledge and behavior (Rotatori & Fox. 1981). The recordidg.j2lml~lw.eighc\\'hile_rflr:t!cipalink irraweight reduction pr.2g~an.result-in weight.lossdue toits reactivity effect (LeBow, Rotatori & Fox, 1981). When discussing the issue of reactivity. investigators must be cautious in their interpretations because of the accuracy of the data reported (Bellack, Rosensky, & Schwartz, 1974). A number of studies (Charney. Goodman, McBride, Lyon. & Pratt, 1976; Pirie, Jacobs. Jeffrey, & Hannan, 1981; Schlichting. Hoiland-Carlsen, & Quaade, 1981; Stunkard & Albaum, 1981; Wing. Epstein, Ossip, & LaPorte, 1979) have investigated the accuracy of self-reported body weights. The studies demonstrated that most subjects are quite accurate although some subjects make large errors. Another concern in self-monitoring and self-control appoaches is the individual's adherence to techniques taught. Generally the individual records the degree to which he/she adhered to the techniques. Theoretically, adherence to the techniques should result in behavioral changes that produce weight loss (Coates & Thoresen, 1981). However, the literature has revealed weak relationships between behavior changes and weight loss among adult normal individuals (Brownel & Stunkard, 1978; Jeffery & Coates, 1978). In contrast, a number of investigations have not demonstrated significant relationships between behavior and weight changes (Bellack, Rozensky, & Schwartz, 1974; Brownell, Heckerman, Westlake, Hayes, & Monti, 1978; Jeffery, Wing & Stunkard, 1978; Stalonos, Johnson, & Christ, 1978). The assessment data gathered from the above studies relies on the individuals'own records, and one must examine the reliability of such self-report records (Hall, 1972) to be meaningful. Thus the purpose of this study was to determine the effect of a self-control self-monitoring system in a behavioral weight

4 Anthon» F. Rotatori, PhD, et al. 109 reduction program as well as to assess the reliability and accuracy of a subject's recordings. Subject METHOD The subject involved in this study was a 22-year-old male graduate student who at the initiation of the study weighted 190 pounds. The subject was 25 pounds overweight according to the Metropolitan Life Insurance Company height and weight tables, which are based on data from the Build and Blood Pressure Study (1959), Society of Actuaries. Setting The study took place in three settings: the subject's home, where food preparation and data recording took place, the subject's job site, where the prepared food was eaten and some data recording took place, and the local gymnasium, where the exercise component of the study took place. Procedure Baseline 1. Baseline was taken for eating behavior by using a golf counter to record the number of arrnlifts used to direct food and liquid, other than water, into the mouth. Following each armlift, the subject was required to press the gold counter that recorded that armlift. After any meal or snack the total number of armlifts used would appear on the counter, which could then be recorded on the appropriate chan. TABLE 1 Reliability Checks for Armlifts, Minutes of Exercising and Meals Eaten for All Experimental Phases Behavior Baseline Treatment Fa11ow-up l. Armlifts 91: SS 92'. 100" ' 95' 95:. Dates S _9-20-8\ 2. Exerci se 100' Dates sT-- -_.~._--" 3a. Meals Dates 100' 100' S1 4-1O-Rl rr:'iH 9-rr~N--'-' ---._----_.~-_.~_._-- 3b. Sal anced Meals 100',: 100~,: ' "Oa::-Ot""e""s '-"--~3'-~2 0;C-_"-;iSCi"1-o3c- "'2 0'- 8'1-"'3 _~3iT'1 -' Sl

5 110 The Journal of Obesity and Wezght Regulation Treatment 1. For this behavior, treatment consisted of restricting the subject maximum to a number of armlifts to be used when engaging in eating behavior (Ratcliff, 1974). More specifically, for breakfast the subject could use only a maximum of 20 armlifts. If any food or li quad was left following the twenty arrnlifts, it was either put away or discarded. For lunch and dinner the maximum number of armlifts that could be used was fifty. Any leftover food was dealt with in the same manner as was indicated for breakfast. For snacks the maximum was 10. For alcohol consumption the subject could use a maximum of 50 armlifts if he visited the local bars or attended parties or 20 armlifts if friends would come over for a social drink(s). The subject also followed a series of suggestions by Rotatori and Fox (1981) that would make his eating behavior more distinct. These included eating meals as much as possible in one place, using a complete place setting for eating a meal or snack, chewing food fully and swallowing before taking another bite, and putting utensils down after each bite. Baseline 2. A clock that hung from the wall of the gymnasium was used during baseline to record the number of minutes the subject engaged in physical activities, i.e., playing basketball, running, doing calisthenics. Before the subject began exercising for the day, he would record the time shown on the clock. At the termination of the exercise period, he would again record the time shown on the clock to determine the number of minutes he engaged in exercise for that day. The data were than recorded on the appropriate chart. Treatment 2. An additional ten minutes of exercising was added to the daily exercise period, which varied from day to day. The additional time was either spent playing basketball, running, doing calisthenics, or in the sauna. The choice was decided on a daily basis. Daily and weekly charts were also included in this part of the study. The charts were kept to monitor the amount of weight loss and because it was intrinsically rewarding for the subject to chart and see the lost weight on paper. Baseline 3a and b. Counted was the number of "meals" and "balanced meals" the subject had each day. A meal was recorded as such if it consisted of at least one serving of at least three of the four food groups, which include; the meat group, the bread/ cereal group, the milk group, and the fruit/vegetable group. A balanced meal was counted if it consisted of the proper servings of food from the four food groups as recommended by Rotatori & Fox (1981). Treatment 3a & b. The goal for this combination of behaviors was to ultimately have the subject eat three balanced meals a day, according to the definition of balanced meal. By doing this, the subject would have eaten three meals a day, all of which have been balanced, therefore meeting the criterion for both behaviors. Reliability A total of 31 reliability checks were conducted in which two independent observers collected data for the behaviors during the three experimental phases ( see Table 1). Reliability was determined by using a simple division procedure (the small frequency divided by the larger frequency obtained by each other) for each behavior. Average reliability for behavior one was for baseline, for treatment, and for follow-up. Average reliability for behavior two was for baseline, for treatment, and for follow-up. In behaviors 3a and b, agreement was 100 percent across all checks. Reliability for weigh-ins was conducted by using two different scales: a Fairbanks-Morse 1/2 pound graduation scale and a Fairbanks-Morse standard scale. The average reliability for the six weight checks was 99.8 percent.

6 Anthony F. Rotatori, PhD, et at. 111 Armlifts RESULTS For the baseline, the range in the number of armlifts used to direct food and liquid, other than water, into the mouth during a meal varied from 5 to 130 with a mean of The weekly total for armlifts varied from 472 to 617 with a mean of When the subject used one intervention procedure criteria for maximum armlifts, the range for a meal varied from 10 to 60 with a weekly total of 20.13, whereas the weekly total for armlifts ranged from 393 to 572 with a mean of (see Figure I). Follow-up revealed a maintenance of the behavior learned. Exercise During baseline, the range for the number of minutes in exercise varied on a daily basis from 0 to 70with a mean of The weekly exercise total varied from 172 to 290 with a mean of During treatment, the range for the number of minutes in exercise varied on a daily basis from 0 to 70 with a mean of The weekly exercise total varied from 202 to 370 with a mean of The follow-up data revealed a substantial decrease in minutes of exercise. Meals Eaten During baseline the daily range for the number of meals eaten varied from 0 to 2 with a mean of 1.3. The weekly total varied from 5 to 12 with a mean of During treatment the range for daily meals eaten varied from I to 3 with a mean of The weekly total varied from 10 to 15 with a mean of 13. The follow-up check revealed a maintenance of the behavior learned Balanced Meals Eaten During baseline, the daily range for the number of balanced meals eaten varied from 0 to 2 with a mean of.54. The weekly total varied from 2 to 9 with a mean of During treatment, the range for daily balanced meals eaten varied from 0 to 2 with a mean of.80. The weekly total varied from 5 to 7 with a mean of The follow-up data are similar to the treatment results.

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8 Anthony F. Rotatori, PhD, et at. 113 DISCUSSION The results indicated that a self-monitoring behavioral weight reduction program was effective in reducing the weight of a 22-year-od overweight male as the subject lost nineteen pounds during an l I-week period. Additionally, a 4-month follow-up revealed the subject lost an additional nine pounds. The study demonstrated that when a subject adheres to weight reduction techniques, weight loss occurs. Also, a subject can reliability record their weight with few errors. The above study necessitated the inclusion of reliability observers to check the subject's adherence to the techniques and the accuracy of the daily weighing. The use of spouses, parents, relatives, or friends as reliability checkers would be a natural and practical way to assist the dieter in their weight loss program. This is especially relevant, since a number of successful weight losses studies have programmed spouses to administer reinforcement and provide verbal feedback on how well the dieter is using the weight control techniques (LeBow, 1981; Matson, 1977). For treatment that takes place in a mental health facility, observers can be trained to use the Eating Analysis and Treatment Schedule (EATS) developed by Coates and Thoresen (1978), which is an observational survey for use by nonparticipant observers at mealtimes to collect data on the eating behaviors of individual dieters. REFERENCES Abramson EE: Behavioral approaches to weight control: An updated review. Behuiior Research and Therapy, 15: Bellack AS: A comparison of self-reinforcement and self-monitoring in a weight reduction program. Behavior Therapy 7: Bellack AS, Rosensky R, & Schwartz J: A comparison of two forms of self-monitoring in a behavioral weight reduction program. Behacior Therapy 5,523-30,1974. Brownell KD, Heckerman CL, Westlake R]. Hayes SC. & Monti PM: The effect of couples training and partner cooperativeness in the behavioral treatment of obesity. Behacto ur Research and Therapy i6: ,1978. Brownell KD & Stunkard Aj: Behavioral treatment of obesity in children. A merican Journal of Disease of Children 132: ,1978. Bruch, H: The importance oj Overweight. W. W. Norton, New York, Cautela JR: Treatment of compulsive behavior by covert sensitization. Psychological Records 16: 33-41,1966. Charney M, Goodman HC, McBride M, Lynon B, & Pratt R: Childhood antecedents of adult obesity: Do chubby infants become obese adults? New England journal of Medicine 295: 6-9, Coates T] & Thoresen, CEo Treating obesity in children and adolescents: A review. American Journal oj Public Health 68: , 1978.

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